ml2215 Oki Semiconductor, ml2215 Datasheet - Page 19

• Manufacturer Part Number: ml2215
• Description: Speech Synthesizer Plus Music Lsi With On-chip 3 Mbit Mask Rom
• Manufacturer: Oki Semiconductor

When N6 to N0 are set to “0” in scale code definition, the code means “Rest”. Table 8.5 shows rests and their
corresponding rest codes (L5 to L0).
The following formula can be used to calculate the duration or beat of a musical note (including rest), that is
defined by a note code and tempo code.
TP is a numerical value defined in the Phrase Control Table and its bit correspondence to tempo data can be
calculated as follows:
Meanwhile, L is defined by a musical note code, and its bit correspondence to the musical note code can be
calculated as follows:
1 Semiconductor
Musical Note
1.5
TP = 2
L = 2
Rest
5
(TP+1)
L5 + 2
4
TP4 + 2
Table 8.4 Musical Notes and Corresponding Note Codes
4
L4 + 2
(L+1) msec (Where TP is integer between 1 to 31, and L is integer between 4 to 63)
3
L5
L5
TP3 + 2
1
1
0
0
0
0
0
0
1
0
0
0
0
0
Table 8.5 Rests and Corresponding Rest Codes
3
L3 + 2
2
TP2 + 2
2
L4
L4
L2 + 2
1
1
1
0
0
0
1
0
1
1
0
0
0
0
1
TP1 + 2
1
L1 + 2
L3
L3
1
1
0
1
0
0
1
1
1
0
1
1
0
0
0
0
L0
TP0
Note Code
Rest Code
L2
L2
1
1
1
1
1
0
1
1
1
1
1
0
1
1
L1
L1
1
1
1
1
1
1
1
0
1
1
1
1
1
1
L0
L0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
L5 to L0
L5 to L0
0BH
3FH
2FH
1FH
17H
0FH
07H
05H
3FH
1FH
17H
0FH
07H
03H
FEDL2215-01
ML2215
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